STATION: KONA INTL AT KEAHOLE ARPT (PHKO), HI
CLIMATOLOGICAL SUMMARY. Period of Record: Jan 1998 to Dec 2008
Summaries based on unedited daily ASOS data. Errors may be present.
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TEMPERATURE (F) | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
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Avg Max Temp | 81.5 81.3 82.3 83.2 83.8 85.0 86.2 87.0 86.7 85.9 84.1 82.3 | 84.1
Avg Min Temp | 68.2 68.0 69.7 70.9 72.1 73.3 74.4 75.2 74.5 73.7 71.7 69.5 | 71.8
Avg Temperature | 74.8 74.7 76.0 77.0 78.0 79.2 80.3 81.1 80.6 79.8 77.9 75.9 | 77.9
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Extremes: | |
Extreme Max Temp| 87 87 88 89 93 90 93 92 92 97 93 89 | 97
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Date of Ext-Day | 21 15 19 01 14 10 30 31 02 19 09 06 |
-Year| 1999 2002 1999 2005 2002 2002 2000 2000 2000 2000 2001 2005 |
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Extreme Min Temp| 44 60 61 65 48 43 69 70 69 67 53 61 | 43
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Date of Ext-Day | 07 06 16 05 18 09 08 28 03 27 24 28 |
-Year| 1998 1998 2005 2008 2004 2000 1998 1999 1999 1999 2007 1999 |
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Heating Degree Days | 0 0 0 0 0 0 0 0 0 0 0 0 | 1
Cooling Degree Days | 305 273 340 361 402 426 475 498 468 458 387 338 | 4731
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Avg Number of Days: | |
Max Temp >= 90 | 0.0 0.0 0.0 0.0 0.1 0.1 0.3 0.9 0.8 0.7 0.3 0.0 | 3.2
Max Temp >= 75 | 31.0 28.2 31.0 30.0 31.0 30.0 31.0 31.0 30.0 31.0 30.0 31.0 | 365.2
Max Temp <= 32 | 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 | 0.0
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Min Temp <= 32 | 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 | 0.0
Min Temp <= 20 | 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 | 0.0
Min Temp <= 0 | 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 | 0.0
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Avg Dew Point Temp | 63.2 62.7 64.6 64.2 65.6 66.6 68.1 68.7 68.2 67.0 65.8 64.1 | 65.7
Avg Wet Bulb Temp | 67.5 67.2 68.6 68.8 69.8 70.6 72.1 72.7 72.3 70.9 69.7 68.4 | 69.9
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Avg Sea Level Pres | 29.98 30.01 30.01 30.03 30.01 29.99 29.98 29.97 29.95 29.96 29.97 29.99 | 29.99
(Inches of Mercury) | |
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WEATHER | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
See disclaimer below| |
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Avg Number of Days: | |
Thunderstorms | 0.4 0.2 0.2 0.0 0.1 0.0 0.0 0.0 0.0 0.1 0.1 0.0 | 1.0
Heavy Fog | 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.0 | 0.4
Fog | 2.9 1.3 2.3 1.0 1.5 2.1 1.1 1.1 0.9 1.6 1.7 1.1 | 18.6
Hail | 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 | 0.0
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PRECIPITATION (In) | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
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Average Monthly | 1.58 1.22 0.80 0.55 0.75 0.98 0.47 0.57 0.68 1.20 1.12 1.00 | 10.92
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Maximum Daily | 1.83 2.84 2.48 1.14 0.71 1.31 1.42 1.02 1.11 3.17 4.08 3.94 | 4.08
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Date of Ext-Day | 04 28 16 21 16 27 29 19 08 16 02 05 |
-Year| 2004 2004 2002 2004 2004 2004 2006 2004 2000 2006 2000 2007 |
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Avg Number of Days: | |
>= 0.01 | 4.3 2.6 3.7 3.5 5.8 5.6 3.8 4.3 5.7 3.5 3.5 2.9 | 49.4
>= 0.10 | 2.3 1.3 1.6 1.1 2.1 2.0 0.8 1.5 1.5 1.5 1.2 1.5 | 18.3
>= 0.25 | 1.8 0.9 0.5 0.6 1.2 0.9 0.4 0.7 0.6 1.0 0.5 0.9 | 10.2
>= 0.50 | 1.1 0.7 0.4 0.5 0.5 0.6 0.2 0.4 0.4 0.6 0.5 0.4 | 6.2
>= 1.00 | 0.6 0.4 0.2 0.1 0.0 0.3 0.2 0.1 0.1 0.3 0.4 0.3 | 2.8
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WIND (MPH) | Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec | Year
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Daily Avg Wind Speed| 8.1 7.8 8.1 8.0 7.8 7.9 7.9 8.0 7.7 7.3 7.3 7.5 | 7.8
Daily Avg Max 2-Min | 16.7 16.8 16.7 16.5 15.8 15.9 16.5 16.6 15.8 16.1 15.9 15.8 | 16.3
Daily Avg Peak Gust | 19.6 19.7 19.4 19.3 18.4 18.5 19.4 19.4 18.5 18.8 18.5 18.4 | 19.0
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Maximum Daily Avg | 23.0 25.3 24.7 18.4 14.4 11.8 11.8 11.4 11.7 15.3 20.3 25.0 | 25.3
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Maximum 2-Minute Avg| 38 44 39 33 36 29 30 31 25 33 43 41 | 44
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Date of Max 2min-Day| 14 27 27 11 03 17 29 04 12 28 19 10 |
-Year| 2004 2004 2006 1998 2004 1998 2008 2006 2001 2001 2003 2004 |
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Maximum Peak Gust | 46 54 44 38 41 37 35 36 31 38 51 49 | 54
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Date of Max Gust-Day| 01 27 27 11 03 17 29 04 12 28 19 07 |
-Year| 2005 2004 2006 1998 2004 1998 2008 2006 2001 2001 2003 2007 |
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Avg Number of Days: | |
Peak Gust >=30 | 3.1 2.7 2.5 1.5 0.9 0.5 1.3 1.0 0.3 1.4 1.7 1.7 | 18.7
Peak Gust >=40 | 0.5 0.7 0.5 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.2 0.5 | 2.4
Peak Gust >=50 | 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 | 0.2
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Max 2-Minute >=30| 1.6 1.7 0.8 0.4 0.1 0.0 0.1 0.1 0.0 0.3 0.7 0.0 | 5.8
Max 2-Minute >=40| 0.0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 | 0.4
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Observations of WEATHER may me innacurate due to early ASOS inconsistancies. Average days
with Thunderstorms may be low due to early mis-detection.
Heavy Fog = Visibility less than or equal to 1/4 mile.
Fog = Visibility greater than 1/4 mile or less than 7 miles.
Peak Gust = Maximum 5-second average.
Snowfall data not observed at ASOS stations.
Copyright ©2009 Western Regional Climate Center - Desert Research Institute - Reno, Nevada.